Car-ventilator



- (No Model.)

J. HANKINL GAR VENTILATOR. No. 503,047. Patented Aug. 8. 1 93,

- a A i UNITED STATES:

' PATENT OFFICE.

JOHN HANKIN, OF RUTHERFORD, NEW JERSEY.

CARI-VENTILATOR.

SPECIFICATION forming part of Letters I ate nt No. 503,047, dated August 8, 1893. Application filed March 22., 1893. Serial No. 467,317. on man.)

T0 at whom it may concern.-

Be it known that I, JOHN HANKIN, a citizen of the United States, residing at Rutherford, in the county of Bergen and State ofNew Jersey, have invented a new and useful Ventilator for Cars, of which the followingis a specification.

My invention relates to improvements in ventilators for railway cars; the objects in V ew being to-provide a cheap and simple devlce adapted to be mounted conveniently upon the roofs of cars andso constructed as to prevent the admission of rain, snow, sleet, 850., or any cold drafts, and 'yet at the same time be adapted to provide an exhaust for the interior of the car regardless of the direction of travel of the car, whereby all foul air will be withdrawn from the car and pure air admitted.

With these general objects in view the in vention consists in certain features of con: struction hereinafter specified and particularly pointed out in the claims.

Referring to the drawings:-Figure 1 is a perspective view of a ventilator constructed in accordance with my invention. Fig. 2 isa Vertical longitudinal sectional view of the same. Fig. 3 is a vertical transverse sectional view thereof.

Like numerals of reference indicate like parts in all the figures of the drawings.

In carrying out my invention I employ a sheet-metal casing 1, the same being of inverted triangular shape and at its three angles provided with openings. The upper openings 1 and 2 are longitudinally opposite each other, while the lower opening 3 communicates with the interior of the car and is'surrounded by a securing flange extending at a right angle to the casing and adapted to be secured to the roof of the car. side of the casing above the opening 4 the same is provided with an internal surrounding gutter or trough 5 which communicates with the exterior through a series of minute perforations 6 provided in the casingat the base of the gutter or trough. This gutter is intended to receive any moisture that may find its way into the casing and conduct the same to the outside. The upper side of the casing is provided with an elliptical opening Upon the in- 7, and surmountin g the same and spaced therefrom is a convexedcap 8, brackets being employed at intervals for supporting the cap @above the casing so that a space is produced entirely around the cap, and between it and i the casing. At opposite ends of the cap stops 9 are located upon the inner side of the casing, and at diagonally opposite points similar 'stops 10 are located near the bottom of the (casing. At a point between the diagonal stops i a transverse shaft 11 is located, and upon this shaft is loosely mounted a rocking-damper 12,

:the major portion of whose area is above the shaft, whereby it is'adapted to be thrown to either side of the opening 7 in the upper side of the casing by the pressure of air thereagainst and hence establish communication between the interior of the car and either one of the two end openings 2 and 2, and cut off communication with the remaining opening. At the lower end of the ventilator-casing a register 16 is locatedby which the draft of air may be regulated. In transverse supports or bars 13, which cross the openings 2 and 2, is supported a longitudinal shaft 14, which passes through the damper and provides bearings in each of the openings 2 and 2 for a pair of rotatable fan-wheels 15. This completes the construction, 'whose operation may be briefly'stated as follows: For example, we will presume that the car is moving in the direction of the large arrow X, when it will be seen that the fan-wheel 15 in the opening 1 will be revolved, the air passing in the direction of the small arrows, through the same, and out under the cap of the casing, while the fan 15 of the opening 2 will serve as an exhaust fan, and thus exhaust the foul air in the coach below making room for pure fresh air. The damper isautomatically thrown at its top in the direction opposite the direction of movement of the car. In this manner a most eifective ventilation is constantly carried on and the coach maintained pure and healthy. If the car should be running in the opposite direction the damper is automatically reversed, that is swung to the position shown in dotted lines, so that the opening 2 is cut off from communication with the car and the opening 2 placed in communication therewith, and the air exhausts from the car in the same manner regardless of the direction of travel of the car or coach. It will be seen that any moisture that may gain access to the casing will be caught by the sides of the casing or the damper, and the latterbein g above the gutter or trough will shed the same into the gutter or trough whereby it will be collected and carried off through the perforations 6 onto the roof of the car.

Having described my invention, what I claim is- 1. The combination with the substantially triangular casing having openings at its three angles and upon its upper side, of a longitudinal shaft loosely journaled in the two longitudinally opposite openings, the two wheels carried by the shaft a cap arranged over the upper opening, and a damper pivoted in the casing between the longitudinally opposite openings and extending diagonally across said casing, whereby either of said longitudinally opposite openings may be thrown into communication with the lower opening, substantially as specified.

2. The combination with the triangular casing 1 having the longitudinally opposite openings 2, 2' the lower inlet opening 3 and the upper exit-opening 7, of the cap 8 arranged over the opening 7 and out of contact with the casing, the shaft 11 passing through the casing, the damper 12 loosely mounted below its center on the shaft, the diagonally opposite pairs of stops 9 and 10, the former arranged at opposite sides of the opening 7,- the gutter or-trough arranged around the interior of the casing below the damper and opposite perforations formed in the casing, the crossbars 13 in the openings 2 and 2', the shaft connecting the cross-bars and passing through the damper, the exhaust-fan-wheels mounted on and adapted to revolve with the shaft in the openings 2 and 2', and the register at the lower end of said casing, substantially as specified.

3. In a car ventilator, the casing having openings at opposite ends and at the bottom, the bottom opening communicating with the interior of the car, and the end openings serving in one case as an inlet and in the other as an outlet, in combination with the fans or wheels located in the end openings, and the automatically controlled damper pivoted intermediately between the end openings so as to shut off communication between the same and at the same time establish communication between the bottom opening and one of the end openings, substantially as specified.

In testimony that I claim the foregoing as my own I have hereto afiixed my signature in the presence of two witnesses.

JOHN IIANKIN.

Witnesses:

RICHARD HANKIN, LUTHER SHAFER. 

